/Engine/Source/Runtime/Landscape/Classes/LandscapeInfo.h
void ForAllSplineActors ( [TFunctionRef](API\Runtime\Core\GenericPlatform\TFunctionRef)< void([TScriptInterface](API\Runtime\CoreUObject\UObject\TScriptInterface)< [ILandscapeSplineInterface](API\Runtime\Landscape\ILandscapeSplineInterface) >)> Fn ) const